We look at the division of 31549939 by 729 
The aim is to understand the frequency of 729 in 31549939.

Going ahead to step 1:
729 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 729

Advancing to step 2:
729 can be fit into 31 0 times, resulting in a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Include the next digit (5) from the dividend after 31, then repeat: 315 / 729

Advancing to step 3:
729 can be fit into 315 0 times, resulting in a remainder of 315.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 315, we get 315.
Grab the next digit (4) from the dividend, add it to 315, then carry on: 3154 / 729

Going ahead to step 4:
729 can be fit into 3154 4 times, resulting in a remainder of 238.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 238 after subtracting 2916 from 3154.
Fetch the next digit (9) from the dividend, attach it to 238 and continue: 2389 / 729

Step 5:
The number 729 fits into 2389 3 times, leaving a remainder of 202.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we subtract 2187 from 2389, we get 202.
Grab the next digit (9) from the dividend, add it to 202, then carry on: 2029 / 729

On to step 6:
729 can be fit into 2029 2 times, resulting in a remainder of 571.
Use 2 as the next digit of our solution. 
Result so far: 432.0
Deduct 1458 from 2029 and we're left with 571.
Bring next digit (3) of the dividend behind the 571 and repeat the process: 5713 / 729

Going ahead to step 7:
729 goes into 5713 7 times with a remainder of 610.
The number 7 becomes the next digit in our result. 
Result so far: 4327.0
If we subtract 5103 from 5713, we get 610.
Take the next digit (9) from the dividend and append it to 610, then repeat: 6109 / 729

Advancing to step 8:
729 can be fit into 6109 8 times, resulting in a remainder of 277.
The number 8 becomes the next digit in our result. 
Result so far: 43278.0
If we take 5832 away from 6109, we end up with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Going ahead to step 9:
729 goes into 2770 3 times with a remainder of 583.
Record the quotient 3 as the next digit in the result. 
Result so far: 43278.3
If we subtract 2187 from 2770, we get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Going ahead to step 10:
729 can be fit into 5830 7 times, resulting in a remainder of 727.
The number 7 becomes the next digit in our result. 
Result so far: 43278.37
Deduct 5103 from 5830 and we're left with 727.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7270, and continue the process.

Advancing to step 11:
729 can be fit into 7270 9 times, resulting in a remainder of 709.
Use 9 as the next digit of our solution. 
Result so far: 43278.379
Subtracting 6561 from 7270 leaves us with 709.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7090, and continue the process.

Moving on to step 12:
The number 729 fits into 7090 9 times, leaving a remainder of 529.
The number 9 becomes the next digit in our result. 
Result so far: 43278.3799
If we subtract 6561 from 7090, we get 529.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5290, and continue the process.

After the division, we end up with 43278.3799 and a remainder of 0.00529.